Transforming growth factor-beta 1(TGF-β1)has been extensively studied for its pleiotropic effects on central nervous system diseases.The neuroprotective or neurotoxic effects of TGF-β1 in specific brain areas may de...Transforming growth factor-beta 1(TGF-β1)has been extensively studied for its pleiotropic effects on central nervous system diseases.The neuroprotective or neurotoxic effects of TGF-β1 in specific brain areas may depend on the pathological process and cell types involved.Voltage-gated sodium channels(VGSCs)are essential ion channels for the generation of action potentials in neurons,and are involved in various neuroexcitation-related diseases.However,the effects of TGF-β1 on the functional properties of VGSCs and firing properties in cortical neurons remain unclear.In this study,we investigated the effects of TGF-β1 on VGSC function and firing properties in primary cortical neurons from mice.We found that TGF-β1 increased VGSC current density in a dose-and time-dependent manner,which was attributable to the upregulation of Nav1.3 expression.Increased VGSC current density and Nav1.3 expression were significantly abolished by preincubation with inhibitors of mitogen-activated protein kinase kinase(PD98059),p38 mitogen-activated protein kinase(SB203580),and Jun NH2-terminal kinase 1/2 inhibitor(SP600125).Interestingly,TGF-β1 significantly increased the firing threshold of action potentials but did not change their firing rate in cortical neurons.These findings suggest that TGF-β1 can increase Nav1.3 expression through activation of the ERK1/2-JNK-MAPK pathway,which leads to a decrease in the firing threshold of action potentials in cortical neurons under pathological conditions.Thus,this contributes to the occurrence and progression of neuroexcitatory-related diseases of the central nervous system.展开更多
Urinary tract infection is one of the most common bacterial infections in humans. The urine cytobacteriological examination is the key test for its diagnosis. This work aims to Evaluate the prevalence of urinary tract...Urinary tract infection is one of the most common bacterial infections in humans. The urine cytobacteriological examination is the key test for its diagnosis. This work aims to Evaluate the prevalence of urinary tract infection at the Microbiology Laboratory of the University Hospital Mohamed VI in Tangier and to highlight its epidemiological and bacteriological characteristics. It was a descriptive study with retrospective data collection which took place from January 2021 to June 2022, at the Microbiology Laboratory of the university hospital Mohamed VI in Tangier. It covered all urine cytobacteriological examinations (ECBU) during the study period. We identified 77 cases of urinary tract infections out of 300 requests for (ECBU), that is a positivity rate of 25 %. The mean age was 55 years. The male gender was predominant. The epidemiological profile of the isolated strains was dominated by Enterobacteriaceae 81 %, followed by Gram-positive cocci 11 % and non-fermenting gram-negative bacteria 8 %. The main bacteria responsible for urinary tract infections in order of frequency: Escherichia coli 42 %, Klebsiella pneumoniae 20 %, Enterobacter cloacae 9 %, Staphylococcus aureus 6 %, Pseudomonas aeruginosa 5 % and Acinetobacter baumannii 3%. Most of the analyzed organisms showed resistance, especially to the beta-lactam antibiotic;the enterobacteria strains isolated had revealed resistance to amoxicillin: 74%, to amoxicillin-clavulanic acid in 40% of cases, and to third-generation cephalosporins in 24%. In terms of resistance mechanisms, 11 % of the Enterobacteriaceae were extended-spectrum β-lactamase producers and 9 % of the specimens were identified as carbapenemase producers. Of the Staphylococcus aureus strains isolated, 75% were resistant to meticillin. The Glycopeptides and linezolid were the most active molecules on these isolated strains. 15% of Enterococcus species isolated in our laboratory were resistant to glycopeptides (vancomycin and teicoplanin).展开更多
This editorial comments on the article by Desai et al,which investigates the impact of coronavirus disease 2019(COVID-19)on in-hospital mortality among patients with recurrent stroke using data from the 2020 National ...This editorial comments on the article by Desai et al,which investigates the impact of coronavirus disease 2019(COVID-19)on in-hospital mortality among patients with recurrent stroke using data from the 2020 National Inpatient Sample.The findings reveal significantly higher mortality rates in COVID-19-positive patients compared to non-COVID-19 patients,particularly among middle-aged individuals,males,and ethnic minorities.This editorial explores the underlying mechanisms contributing to these outcomes and discusses the clinical implications for targeted management strategies in high-risk groups.The results emphasize the need for comprehensive approaches to mitigate the heightened risks faced by recurrent stroke patients during the COVID-19 pandemic.展开更多
The systemic effects of gastrointestinal(GI)microbiota in health and during chronic diseases is increasingly recognised.Dietary strategies to modulate the GI microbiota during chronic diseases have demonstrated promis...The systemic effects of gastrointestinal(GI)microbiota in health and during chronic diseases is increasingly recognised.Dietary strategies to modulate the GI microbiota during chronic diseases have demonstrated promise.While changes in dietary intake can rapidly change the GI microbiota,the impact of dietary changes during acute critical illness on the microbiota remain uncertain.Dietary fibre is metabolised by carbohydrate-active enzymes and,in health,can alter GI microbiota.The aim of this scoping review was to describe the effects of dietary fibre supplementation in health and disease states,specifically during critical illness.Randomised controlled trials and prospective cohort studies that include adults(>18 years age)and reported changes to GI microbiota as one of the study outcomes using non-culture methods,were identified.Studies show dietary fibres have an impact on faecal microbiota in health and disease.The fibre,inulin,has a marked and specific effect on increasing the abundance of faecal Bifidobacteria.Short chain fatty acids produced by Bifidobacteria have been shown to be beneficial in other patient populations.Very few trials have evaluated the effect of dietary fibre on the GI microbiota during critical illness.More research is necessary to establish optimal fibre type,doses,duration of intervention in critical illness.展开更多
Detection and treatment of drug resistance in extrapulmonary tuberculosis(EPTB)is a major challenge worldwide.Drug resistance in EPTB has not been studied extensively.However,patients with drug-resistant EPTB have bee...Detection and treatment of drug resistance in extrapulmonary tuberculosis(EPTB)is a major challenge worldwide.Drug resistance in EPTB has not been studied extensively.However,patients with drug-resistant EPTB have been reported to have poor outcomes[1].Rifampicin and isoniazid are the cornerstone drugs in the management of EPTB.Resistance in Mycobacterium(M.)tuberculosis to these drugs commonly arises due to mutations in the‘rpoB’gene and‘katG&inhA’genes,which confer resistance to rifampicin and isoniazid,respectively.Treatment outcomes are affected by the presence of these mutations.In addition,anatomical and physiological barriers impede the effective delivery of drugs to the affected extrapulmonary site[1].An analysis of the frequency of mutations in drug resistant M.tuberculosis strains causing EPTB in our region can help identify patterns of drug resistance.This,in turn,can provide inputs that may be used for modifying standard treatment regimens to make them more effective.The present study aims to identify the frequency and pattern of mutations in the‘rpoB’gene and‘katG&inhA’genes in M.tuberculosis strains isolated from EPTB samples.展开更多
Objective:To investigate the effects of arecoline on HPV-positive cervical cells and unveil its underlying mechanism in cervical carcinogenesis.Methods:The cytotoxicity of arecoline was determined and the effect of su...Objective:To investigate the effects of arecoline on HPV-positive cervical cells and unveil its underlying mechanism in cervical carcinogenesis.Methods:The cytotoxicity of arecoline was determined and the effect of subtoxic concentrations of arecoline on the expression of viral oncoproteins and transcriptional factors was examined in CaSki and SiHa cells.HPV16 promoter activity was evaluated in a plasmid containing HPV16 long control region(pGL3-HPV16LCR)-transfected cells.Cell proliferation,cell migration,and number of colonies were assessed by MTT,wound healing assay,and colony-forming assay,respectively.Results:Arecoline at 0.01μg/mL significantly upregulated HPV16 E6 and E7 oncoproteins in both CaSki and SiHa cells.It also upregulated the expression level of c-Fos and c-Jun mRNAs,and c-Myc protein in CaSki and SiHa cells.In addition,arecoline at subtoxic concentrations(0.0025 and 0.01μg/mL)significantly induced HPV16 promoter activity in pGL3-16LCR-transfected cells.It also promoted SiHa and CaSki cell proliferation,migration,and colony formation.Conclusions:Arecoline at subtoxic concentrations promotes the proliferation,migration,and colony formation of CaSki and SiHa cells via upregulation of c-Fos,c-Jun,c-Myc,and HPV16 E6 and E7 expressions.展开更多
BACKGROUND The upsurge of antibiotic resistance is a significant challenge to public health,and the dry pipeline of new antibiotics has prompted the discovery of alternative treatment approaches.Enterococcus faecalis(...BACKGROUND The upsurge of antibiotic resistance is a significant challenge to public health,and the dry pipeline of new antibiotics has prompted the discovery of alternative treatment approaches.Enterococcus faecalis(E.faecalis)isolates are often multidrugresistant,posing challenges to antibiotic therapy.Bacteriophage therapy is being explored as an alternative method to treat the growing population of antibioticresistant infections.Nevertheless,many inherent limitations of phages diminish their therapeutic utility,notably the restricted host range and quick development of mutants.The specific types and quantities of bacteriophages and antibiotics may be crucial in generating the optimal phage-antibiotic synergy.AIM To optimize the doses,order,and timing to optimize the synergy of phages and vancomycin on different bacteria states.METHODS A volume of 180μL of E.faecalis bacteria in the logarithmic growth phase,with a concentration of approximately 1×10^(8)colony forming units(CFUs)/mL,was introduced onto a microtitre plate.Subsequently,20μL of phage suspension(1×10^(6)PFUs/mL),vancomycin(16μg/mL),or a combination of both was introduced into the designated wells in the specified sequence and incubated at 37°C for 48 hours.The number of live bacteria was counted at different time points using standardized CFU counting protocols.RESULTS The biofilm model demonstrated that combining phages with vancomycin can eradicate the biofilm.Sequential therapy,involving phage application 8 hours before the antibiotic at a concentration of 108 PFUs/mL,proved the most efficient in eliminating the biofilms and killing the planktonic form of E.faecalis.CONCLUSION The combination of phageɸEFP01 at a higher concentration with a subinhibitory concentration of vancomycin yields a synergistic antibacterial outcome on E.faecalis strain resistant to vancomycin.展开更多
Fermented corn starch has emerged as a promising functional food due to its triad of gut biotics,prebiotic,probiotic,and postbiotic properties,which present significant potential for the management of type 2 diabetes ...Fermented corn starch has emerged as a promising functional food due to its triad of gut biotics,prebiotic,probiotic,and postbiotic properties,which present significant potential for the management of type 2 diabetes through gut microbiota modulation.During fermentation,microbial activity alters the starch matrix,enhancing the production of bioactive compounds such as resistant starch,isomalto-oligosaccharides,and resistant dextrin,which improve insulin sensitivity,reduce inflammation,and support glycemic control.Additionally,fermented corn starch harbors beneficial microbial strains including Lactiplantibacillus fermentum,Bifidobacterium breve,and Saccharomyces cerevisiae,which reinforce gut barrier integrity,stimulate incretin secretion,and suppress systemic inflammation.Postbiotic metabolites such as short-chain fatty acids,exopolysaccharides,and bacteriocins further contribute to glucose homeostasis through immune modulation and gut hormone regulation.Despite its promise,the clinical translation of fermented corn starch is limited by safety concerns(e.g.,contamination with pathogens or mycotoxins),lack of standardized fermentation protocols,and a scarcity of targeted studies.This review synthesizes current evidence on the antidiabetic potential of fermented corn starch,advocating for its integration into precision nutrition approaches and supporting further research to address safety and standardization challenges in functional food development.展开更多
BACKGROUND Leptospirosis is a globally prevalent zoonotic disease with a significant burden in tropical and subtropical regions,including India.Despite its high fatality rate and endemic nature,the disease remains und...BACKGROUND Leptospirosis is a globally prevalent zoonotic disease with a significant burden in tropical and subtropical regions,including India.Despite its high fatality rate and endemic nature,the disease remains underreported in many areas,particularly in Northern India.AIM To analyze the demography,clinical presentation,complications,and mortality risk factors in presumptive leptospirosis patients admitted to a tertiary care hospital over the last 7 years from the Himalayan and Sub-Himalayan regions of Northern India.METHODS A retrospective analysis was conducted on hospital records of patients admitted with leptospirosis at the All India Institute of Medical Sciences,Rishikesh,between January 2018 and December 2024.Diagnosis was based on the Modified Faine’s Criteria and laboratory confirmation via IgM enzyme-linked immu-nosorbent assay(ELISA)and other diagnostic tests.Statistical analysis,including logistic regression,was performed to determine mortality predictors.RESULTS A total of 62 patients were included in the study.The most common symptoms were fever(98.39%),myalgia(41.94%),and jaundice(20.97%).Thrombocytopenia was the most frequent complication,occurring in 72.58%of cases,followed by hepatic involvement(62.9%)and acute kidney injury(40.32%).Multiorgan dys-function syndrome was present in 66.13%of cases,with 19.35%developing acute respiratory distress syndrome(ARDS).The overall mortality rate was 20.97%,with a higher but non-significant mortality trend in the Himalayan region(35%vs 14.29%,P=0.094).Logistic regression analysis revealed that no categorical predictor alone was statistically significant.However,ARDS had a high odds ratio(OR=2.10),suggesting clinical importance despite variability.Jaundice(OR=2.28,P=0.383)and creatinine levels(OR=2.12,P=0.1029)showed a possible trend toward increased mortality,despite statistical variability.Higher international normalized ratio levels(OR=0.33,P=0.0662)were suggestive of a protective effect.CONCLUSION Leptospirosis remains a severe and often fatal disease in Himalayan and sub-Himalayan regions,particularly in hilly areas,where underreporting and delayed diagnosis contribute to poor outcomes.Mortality was highest(33.33%)in cases with multiorgan involvement,particularly affecting the liver,kidneys,and lungs.We did not identify any statistically significant mortality predictors.Although the study did not assess the impact of timely diagnosis,improving healthcare accessibility in hilly regions may facilitate earlier detection and intervention,potentially reducing mortality.展开更多
Metabolic syndrome(MetS)is a cluster of risk factors that significantly increase the chances of developing heart disease,type 2 diabetes mellitus,stroke,and other cardiovascular complications.Since current anti-MetS m...Metabolic syndrome(MetS)is a cluster of risk factors that significantly increase the chances of developing heart disease,type 2 diabetes mellitus,stroke,and other cardiovascular complications.Since current anti-MetS medications like statins,angiotensin-converting enzyme inhibitors,β-blockers,insulin sensitizers and diuretics have been reported to cause unwanted side effects,researchers are exploring promising alternatives.One such alternative relies on the potential of spices and condiments,which have a long history of use in traditional medicine.Among them,Cinnamomum zeylanicum Blume stands out as a popular spice worldwide for its unique taste,aroma,and delicate sweetness compared to other cinnamon varieties.This narrative review aims to summarize the in vivo and clinical evidence concerning the efficacy of C.zeylanicum against MetS indices.Relevant articles from PubMed,Scopus and Google scholar databases were reviewed.In vivo results suggested that C.zeylanicum preparations(extracts,essential oil,crude powder,bioactive compounds,and biosynthesized nanoparticles)were remarkably efficient in ameliorating MetS indices,while the clinical data were less and with several methodological limitations.Further robust clinical studies are warranted to definitively establish C.zeylanicum as a promising functional food for mitigating MetS,potentially leading to its dietary integration as a natural approach to improve metabolic health.展开更多
Tumor stroma,or tumor microenvironment(TME),has been in the spotlight during recent years for its role in tumor development,growth,and metastasis.It consists of a myriad of elements,including tumor-associated macropha...Tumor stroma,or tumor microenvironment(TME),has been in the spotlight during recent years for its role in tumor development,growth,and metastasis.It consists of a myriad of elements,including tumor-associated macrophages,cancer-associated fibroblasts,a deregulated extracellular matrix,endothelial cells,and vascular vessels.The release of proinflammatory molecules,due to the inflamed microenvironment,such as cytokines and chemokines is found to play a pivotal role in progression of cancer and response to therapy.This review discusses the major key players and important chemical inflammatory signals released in the TME.Furthermore,the latest breakthroughs in cytokine-mediated crosstalk between immune cells and cancer cells have been highlighted.In addition,recent updates on alterations in cytokine signaling between chronic inflammation and malignant TME have also been reviewed.展开更多
BACKGROUND Spinal tuberculosis(TB),also known as Pott’s spine,remains a significant global health issue,particularly in regions with a high TB burden.The disease presents complex challenges in diagnosis,management,an...BACKGROUND Spinal tuberculosis(TB),also known as Pott’s spine,remains a significant global health issue,particularly in regions with a high TB burden.The disease presents complex challenges in diagnosis,management,and treatment,prompting a growing interest in research over recent years.The advancements in imaging,diagnostics,and treatment strategies have driven an increased focus on publishing clinical outcomes,review articles,and case series related to spinal TB(STB).AIM To perform a bibliometric analysis of STB research published over the last 5 years(2019-2023)to identify trends in publication volume,contributions by country,and the nature of the research being conducted.METHODS A comprehensive bibliometric analysis was conducted using the PubMed database,focusing on research articles published between 2019 and 2023.Keywords such as“spine tuberculosis,”“spinal TB,”“TB spine,”and“Pott’s spine”were utilized to capture relevant publications.Articles were analyzed based on the type of research(e.g.,case reports,review articles,cohort studies,randomized controlled trials[RCTs]),number of citations,and country of origin based on the corresponding author's details.Further subgroup analysis was performed according to the TB burden in various countries to assess research trends in high-burden regions.RESULTS A total of 528 articles met the inclusion criteria for this bibliometric analysis.The majority of articles were published between 2020 and 2023(440/528;83.3%),while the lowest number was published in 2019(88/528;16.7%).India led the global contributions with 25.8%of the total publications,followed by China(19.9%)and the United States(10.4%).Combined,African countries contributed 6.8%of the research on STB.Regarding the type of articles,case reports and case series dominated the literature(353/528;66.9%),followed by review articles(120/528;22.7%)and cohort studies(45/528;8.5%).Only 1.9%(10/528)of the studies were RCTs.Countries such as the United States,Germany,the United Kingdom,and Japan have pioneered the use of artificial intelligence(AI)in the diagnostic processes for STB,while India,China,South Africa,and other countries have been pivotal in conducting clinical trials and improving clinical management strategies.CONCLUSION This bibliometric analysis revealed a significant increase in STB research over the last 5 years,with India and China being the leading contributors.However,most publications are case reports or case series,with a limited number of RCTs.The results highlighted the need for more high-quality research,especially in terms of RCTs and innovations in diagnostic technologies.Additionally,the application of AI to STB diagnostics shows promise in developed countries,while high-burden countries are focusing on clinical trials and management strategies.展开更多
Objective:To investigate the pattern of antibiotic resistance and biofilm production capabilities of clinical Acinetobacter baumannii(A.baumannii)isolates in this study.Methods:A.baumannii isolates were collected from...Objective:To investigate the pattern of antibiotic resistance and biofilm production capabilities of clinical Acinetobacter baumannii(A.baumannii)isolates in this study.Methods:A.baumannii isolates were collected from Tehran Imam Khomeini Hospital in this cross-sectional study,and the minimum inhibitory concentrations for 16 antibiotics were determined using Vitek2®systems.All isolates were analyzed for biofilm production,then presence of biofilm-associated genes,and class Ⅰ and Ⅱ integron genes.Results:60 non-replicate A.baumannii isolates were included in this study.The resistance rates reached 100%for aztreonam,cefepime,ceftazidime,ciprofloxacin,piperacillin-tazobactam,piperacillin,ticarcillin,and trimethoprim-sulfamethoxazole.A.baumannii isolates were most sensitive to colistin and rifampicin being the most effective treatments.Multi-drug resistant and extensively drug-resistant isolates accounted for 83.3%and 16.7%,respectively.Of the isolates,91.6%formed biofilms,categorized as 10%strong,31.6%moderate,and 50%weak.No correlation was found between antibiotic resistance and biofilm formation.The genes csuE,abaI,and ompA were prevalent,but their distribution was similar across biofilm categories.A relationship between Int1 and biofilm production was noted.Conclusions:The high rates of antibiotic resistance and biofilm formation,alongside the presence of integrons including class Ⅰ and Ⅱ,underscore the necessity for ongoing monitoring of A.baumannii.Notably,classⅠintegron presence was significantly linked to biofilm formation.Further research is needed to explore the connection between antibiotic resistance and biofilm production in A.baumannii.展开更多
Cystic echinococcosis (CE) is a prevalent zoonotic disease caused by Echinococcus granulosus, with a cosmopolitan distribution. The parasite is transmitted cyclically between canines and numerous intermediate herbivor...Cystic echinococcosis (CE) is a prevalent zoonotic disease caused by Echinococcus granulosus, with a cosmopolitan distribution. The parasite is transmitted cyclically between canines and numerous intermediate herbivorous livestock animals. Also, other Taeniid tapeworms could infect domestic dogs and they pose significant veterinary and public health concerns worldwide. This study aimed to develop a sensitive molecular method for detecting Echinococcus spp. DNA in dog fecal samples using next-generation sequencing (NGS). A set of PCR primers targeting conserved regions of Taeniid tapeworms’ 18s rRNA genes was designed and tested for amplifying genomic DNA from various tapeworm species. The PCR system demonstrated high sensitivity, amplifying DNA from all tested tapeworm species, with differences observed in amplified band sizes. The primers were adapted for NGS analysis by adding forward and reverse adapters, enabling the sequencing of amplified DNA fragments. Application of the developed PCR system to dog fecal samples collected from Yatta town, Palestine, revealed the presence of E. granulosus DNA in five out of 50 samples. NGS analysis confirmed the specificity of the amplified DNA fragments, showing 98% - 99% similarity with the 18s rDNA gene of E. granulosus. This study demonstrates the utility of NGS-based molecular methods for accurate and sensitive detection of Echinococcus spp. in dog fecal samples, providing valuable insights for epidemiological surveillance and control programs of echinococcosis in endemic regions.展开更多
BACKGROUND The duodenum plays a significant role in metabolic regulation,and thickened mucous membranes are associated with insulin resistance.Duodenal mucosal resurfacing(DMR),a new-style endoscopic procedure using h...BACKGROUND The duodenum plays a significant role in metabolic regulation,and thickened mucous membranes are associated with insulin resistance.Duodenal mucosal resurfacing(DMR),a new-style endoscopic procedure using hydrothermal energy to ablate this thickened layer,shows promise for enhancing glucose and lipid metabolism in type 2 diabetes(T2D)patients.However,the mechanisms driving these improvements remain largely unexplored.AIM To investigate the mechanisms by which DMR improves metabolic disorders using a rat model.METHODS Rats with T2D underwent a revised DMR procedure via a gastric incision using a specialized catheter to abrade the duodenal mucosa.The duodenum was evaluated using histology,immunofluorescence,and western blotting.Serum assays measured glucose,lipid profiles,lipopolysaccharide,and intestinal hormones,while the gut microbiota and metabolomics profiles were analyzed through 16S rRNA gene sequencing and ultra performance liquid chromatography-mass spectrum/mass spectrum,severally.RESULTS DMR significantly improved glucose and lipid metabolic disorders in T2D rats.It increased the serum levels of cholecystokinin,gastric inhibitory peptide,and glucagon-like peptide 1,and reduced the length and depth of duodenal villi and crypts.DMR also enhanced the intestinal barrier integrity and reduced lipopolysaccharide translocation.Additionally,DMR modified the gut microbiome and metabolome,particularly affecting the Blautia genus.Correlation analysis revealed significant links between the gut microbiota,metabolites,and T2D phenotypes.CONCLUSION This study illustrates that DMR addresses metabolic dysfunctions in T2D through multifaceted mechanisms,highlighting the potential role of the Blautia genus on T2D pathogenesis and DMR’s therapeutic impact.展开更多
Antipalu is a phytomedicinal medicinal beverage that is popular in the District of Abidjan, particularly for the treatment of malaria. However, Antipalu could present potential health effects on patients, and few toxi...Antipalu is a phytomedicinal medicinal beverage that is popular in the District of Abidjan, particularly for the treatment of malaria. However, Antipalu could present potential health effects on patients, and few toxicological studies have been conducted before its use. In order to determine the cytotoxicity of Antipalu, two complementary tests, LDH activity and the MTT cell proliferation assay, were used using Vero cells. Vero cells were exposed to increasing concentrations of Antipalu and incubated for 24, 48 and 72 hours. In addition, forty (40) rats distributed randomly into 4 groups, including 10 animals per group (5 males and 5 females) were used for the potential hepatoxic effects. Animals in group 1 received distilled water and were used as a control group. On the other hand, Lot I, II and III received by gavage a volume of the Antipalu extract corresponding to 1 ml/100 g of body weight at 200 mg/kg, 400 mg/kg, 800 mg/kg, respectively. The extract was administered daily at the same time for 28 days and serum was collected once a week to evaluate hepatic biochemical markers. After 28 days of study, all rats were euthanized by an overdose of ether and the liver of the rats was removed for gross morphological and histopathological analysis. The results of the cell supernatant assay showed an increasing extracellular LDH enzyme activity with lethal concentrations at 10% and 50% (LC10 = 111 µg/mL and LC50 = 555 µg/mL, respectively). In addition, the MTT assay showed a decrease in mitochondrial activity and thus cell proliferation after 24, 48 and 72 H of incubation. Our study showed that Antipalu caused alterations in the plasma membranes of the cells, resulting in the release of lactase dehydrogenase (LDH) into the external environment and a decrease in the mitochondrial activity of the Vero cells. The biochemical parameters ALT, ASAT, ALPs, and GGT showed no significant change (P > 0.05) in the group of treated rats compared to the controls. However, these variations were moderate and transient, with values remaining almost within their standard limits. Microscopic observations of liver tissue sections from rats treated with the Antipalu showed no lesions, edema and necrosis. These results suggest that the Antipalu did not interfere with the functioning or alter the integrity of the liver.展开更多
The herbal drink “Attoté” has been widely used in the Abidjan district to treat a number of illnesses, notably erectile dysfunction. Despite the popularity of its therapeutic effects, very few studies have been...The herbal drink “Attoté” has been widely used in the Abidjan district to treat a number of illnesses, notably erectile dysfunction. Despite the popularity of its therapeutic effects, very few studies have been carried out on its effects on the health of users. The aim of this study was to identify the constituents contained in the phytomedicinal product and to assess their potential adverse effects in vivo. Phytochemical screening was conducted to identify the bioactive molecules in “Attoté” and to evaluate its hepatic effects in vivo. Forty (40) Wistar rats, randomly divided into 4 groups, with 10 animals per group (5 males and 5 females) were used to study potential hepatotoxic effects. Group 1 animals (control group) received distilled water. Batches I, II and III received by gavage a volume of Attoté extract corresponding to 1 ml/100 g body weight at 200 mg/kg, 400 mg/kg and 800 mg/kg, respectively. Attoté extract was administered daily at the same time for 28 days, and serum was collected every two weeks to assess hepatic biochemical markers by spectrophotometry using a Cobas C311® HITACHI biochemistry system. After one month of study, the rats were euthanized by ether overdose and the livers were harvested for morphological and histopathological analysis. Phytochemical screening revealed the presence of alkaloids, polyphenols, leucoanthocyanes, anthraquinones and quinones. Hepatic biochemical and hematological parameters such as red globular, hemoglobin, alanine aminotransferase (ALAT), aspartate aminotransferase (ASAT), alkaline phosphatase (ALPs) and gamma glutamyl transferase (GGT) showed no significant change (p > 0.05) in the treated rat group compared with controls. However, these variations were moderate and transient, with values remaining almost within their standard limits. Microscopic observations of liver tissue sections from treated rats showed no liver damage or dysfunction. This study merits further investigation, with a view to gaining a better understanding of the cytotoxic mechanisms of herbal medicinal beverages, with a view to their reformulation as improved traditional medicines (ITMs).展开更多
Helicobacter pylori(H.pylori)infection is one of the most prevalent bacterial infections affecting mankind.About half of the world’s population is infected with it.It causes several upper gastrointestinal diseases,in...Helicobacter pylori(H.pylori)infection is one of the most prevalent bacterial infections affecting mankind.About half of the world’s population is infected with it.It causes several upper gastrointestinal diseases,including gastric cancer(GC).It has been identified as a major risk factor for GC.GC is one of the most common cancers affecting humans and the third leading cause of cancer-related deaths worldwide.H.pylori infection causes an inflammatory response that progresses through a series of intermediary stages of precancerous lesions(gastritis,atrophy,intestinal metaplasia,and dysplasia)to the final development of GC.Among infected individuals,approximately 10%develop severe gastric lesions such as peptic ulcer disease,1%-3%progress to GC,and 0.1%develop mucosa-associated lymphoid tissue followed by the development of lymphoma.The bacterium has many virulence factors,including cytotoxin-associated gene A,vacuolating cytotoxin A,and the different outer membrane proteins that cause cancer by different mechanisms.These virulence factors activate cell signaling pathways such as PI3-kinase/Akt,JAK/STAT,Ras,Raf,and ERK signaling that control cell proliferation.Uncontrolled proliferation can lead to cancer.In addition,the repair of DNA damage may also be impaired by H.pylori infection.Reduced DNA repair in combination with increased DNA damage can result in carcinogenic mutations.The accurate identification of pathogenetic pathways is imperative for the development of targeted diagnostic markers and personalized treatments.This scoping review aims to update the readers on the role of H.pylori in the development of GC.It will focus on the molecular mechanisms underpinning gastric carcinogenesis in H.pylori infection.It will highlight the interaction between bacterial virulence factors and host cellular pathways,providing insights into potential therapeutic targets and preventive strategies.展开更多
The significance of gut microbiota(GM)in human health is being increasingly researched.An imbalance in GM composition,known as dysbiosis,is linked to various and other health issues.In addition,antibiotics are the pri...The significance of gut microbiota(GM)in human health is being increasingly researched.An imbalance in GM composition,known as dysbiosis,is linked to various and other health issues.In addition,antibiotics are the primary and most significant factors leading to major changes in the composition and function of the GM,which may result in colonization by antimicrobial-resistant(AMR)pathogens.Therefore,alternative antibiotic strategies for combating AMR pathogens are urgently needed.This narrative review highlights current knowledge regarding various pertinent strategies for decolonizing bacterial pathogens from GM and emphasizes decolonization therapies’critical role in pediatric surgical disorders.Strategies such as decontamination of the digestive tract utilizing antibiotics,the use of probiotics,and particularly fecal microbiota transplantation have introduced new options for clinical treatment.These treatments show the potential to restore GM balance and have demonstrated advantages for intestinal disorders related to pediatric surgery,including inflammatory bowel disease,neonatal necrotizing enterocolitis,Hirschsprung-associated enterocolitis,and short bowel syndrome.Despite GM therapeutics,recent strategies are still in their developmental phase and exhibit challenges that need further research.Thus,potential future directions for GMtargeted decolonization therapies are under consideration.Innovative alternative strategies to combat AMR though GM modulation in disorders related to pediatric surgery appear to be promising and should continue to be prioritized for further research and development.展开更多
The Japanese encephalitis virus(JEV)causes Japanese encephalitis(JE),a severe disease that primarily affects children and induces significant central nervous system complications.With the widespread adoption of vaccin...The Japanese encephalitis virus(JEV)causes Japanese encephalitis(JE),a severe disease that primarily affects children and induces significant central nervous system complications.With the widespread adoption of vaccination in children,the incidence among older individuals has increased substantially.Despite this epidemiological shift,research on JEV infection in the elderly remains limited.We established JEV infection models using both aged and young mice to explore age-related differences in pathology and underlying mechanisms.Brain tissue samples were analyzed for pathological changes and viral tropism in major cell types.To further characterize immune response variations,we conducted transcriptomic sequencing on the brain tissues following JEV infection.Aged mice exhibited lower mortality,delayed disease progression,and milder brain pathology compared to young mice after JEV infection.Viral titers and infection rates of major brain cell types were similar in both groups.Transcriptomic analysis revealed diminished immune activation and weaker inflammatory responses in aged mice.Additionally,microglial activation and CD8^(+) T cell function were significantly reduced.Interestingly,JEV infection induced the selective recruitment of B cells in the brains of aged mice.These B cells may modulate the effects of CD8^(+) T cells in the disease process.Compared to young mice,aged mice showed enhanced resistance to JEV progression and reduced brain pathology.This resistance was associated with a weakened immune response in the aged brain,rather than differences in viral infection.The specific recruitment of B cells in the brains of aged mice may play a crucial role in limiting disease progression.展开更多
基金supported by the Natural Science Foundation of Guangdong Province,Nos.2019A1515010649(to WC),2022A1515012044(to JS)the China Postdoctoral Science Foundation,No.2018M633091(to JS).
文摘Transforming growth factor-beta 1(TGF-β1)has been extensively studied for its pleiotropic effects on central nervous system diseases.The neuroprotective or neurotoxic effects of TGF-β1 in specific brain areas may depend on the pathological process and cell types involved.Voltage-gated sodium channels(VGSCs)are essential ion channels for the generation of action potentials in neurons,and are involved in various neuroexcitation-related diseases.However,the effects of TGF-β1 on the functional properties of VGSCs and firing properties in cortical neurons remain unclear.In this study,we investigated the effects of TGF-β1 on VGSC function and firing properties in primary cortical neurons from mice.We found that TGF-β1 increased VGSC current density in a dose-and time-dependent manner,which was attributable to the upregulation of Nav1.3 expression.Increased VGSC current density and Nav1.3 expression were significantly abolished by preincubation with inhibitors of mitogen-activated protein kinase kinase(PD98059),p38 mitogen-activated protein kinase(SB203580),and Jun NH2-terminal kinase 1/2 inhibitor(SP600125).Interestingly,TGF-β1 significantly increased the firing threshold of action potentials but did not change their firing rate in cortical neurons.These findings suggest that TGF-β1 can increase Nav1.3 expression through activation of the ERK1/2-JNK-MAPK pathway,which leads to a decrease in the firing threshold of action potentials in cortical neurons under pathological conditions.Thus,this contributes to the occurrence and progression of neuroexcitatory-related diseases of the central nervous system.
文摘Urinary tract infection is one of the most common bacterial infections in humans. The urine cytobacteriological examination is the key test for its diagnosis. This work aims to Evaluate the prevalence of urinary tract infection at the Microbiology Laboratory of the University Hospital Mohamed VI in Tangier and to highlight its epidemiological and bacteriological characteristics. It was a descriptive study with retrospective data collection which took place from January 2021 to June 2022, at the Microbiology Laboratory of the university hospital Mohamed VI in Tangier. It covered all urine cytobacteriological examinations (ECBU) during the study period. We identified 77 cases of urinary tract infections out of 300 requests for (ECBU), that is a positivity rate of 25 %. The mean age was 55 years. The male gender was predominant. The epidemiological profile of the isolated strains was dominated by Enterobacteriaceae 81 %, followed by Gram-positive cocci 11 % and non-fermenting gram-negative bacteria 8 %. The main bacteria responsible for urinary tract infections in order of frequency: Escherichia coli 42 %, Klebsiella pneumoniae 20 %, Enterobacter cloacae 9 %, Staphylococcus aureus 6 %, Pseudomonas aeruginosa 5 % and Acinetobacter baumannii 3%. Most of the analyzed organisms showed resistance, especially to the beta-lactam antibiotic;the enterobacteria strains isolated had revealed resistance to amoxicillin: 74%, to amoxicillin-clavulanic acid in 40% of cases, and to third-generation cephalosporins in 24%. In terms of resistance mechanisms, 11 % of the Enterobacteriaceae were extended-spectrum β-lactamase producers and 9 % of the specimens were identified as carbapenemase producers. Of the Staphylococcus aureus strains isolated, 75% were resistant to meticillin. The Glycopeptides and linezolid were the most active molecules on these isolated strains. 15% of Enterococcus species isolated in our laboratory were resistant to glycopeptides (vancomycin and teicoplanin).
文摘This editorial comments on the article by Desai et al,which investigates the impact of coronavirus disease 2019(COVID-19)on in-hospital mortality among patients with recurrent stroke using data from the 2020 National Inpatient Sample.The findings reveal significantly higher mortality rates in COVID-19-positive patients compared to non-COVID-19 patients,particularly among middle-aged individuals,males,and ethnic minorities.This editorial explores the underlying mechanisms contributing to these outcomes and discusses the clinical implications for targeted management strategies in high-risk groups.The results emphasize the need for comprehensive approaches to mitigate the heightened risks faced by recurrent stroke patients during the COVID-19 pandemic.
文摘The systemic effects of gastrointestinal(GI)microbiota in health and during chronic diseases is increasingly recognised.Dietary strategies to modulate the GI microbiota during chronic diseases have demonstrated promise.While changes in dietary intake can rapidly change the GI microbiota,the impact of dietary changes during acute critical illness on the microbiota remain uncertain.Dietary fibre is metabolised by carbohydrate-active enzymes and,in health,can alter GI microbiota.The aim of this scoping review was to describe the effects of dietary fibre supplementation in health and disease states,specifically during critical illness.Randomised controlled trials and prospective cohort studies that include adults(>18 years age)and reported changes to GI microbiota as one of the study outcomes using non-culture methods,were identified.Studies show dietary fibres have an impact on faecal microbiota in health and disease.The fibre,inulin,has a marked and specific effect on increasing the abundance of faecal Bifidobacteria.Short chain fatty acids produced by Bifidobacteria have been shown to be beneficial in other patient populations.Very few trials have evaluated the effect of dietary fibre on the GI microbiota during critical illness.More research is necessary to establish optimal fibre type,doses,duration of intervention in critical illness.
文摘Detection and treatment of drug resistance in extrapulmonary tuberculosis(EPTB)is a major challenge worldwide.Drug resistance in EPTB has not been studied extensively.However,patients with drug-resistant EPTB have been reported to have poor outcomes[1].Rifampicin and isoniazid are the cornerstone drugs in the management of EPTB.Resistance in Mycobacterium(M.)tuberculosis to these drugs commonly arises due to mutations in the‘rpoB’gene and‘katG&inhA’genes,which confer resistance to rifampicin and isoniazid,respectively.Treatment outcomes are affected by the presence of these mutations.In addition,anatomical and physiological barriers impede the effective delivery of drugs to the affected extrapulmonary site[1].An analysis of the frequency of mutations in drug resistant M.tuberculosis strains causing EPTB in our region can help identify patterns of drug resistance.This,in turn,can provide inputs that may be used for modifying standard treatment regimens to make them more effective.The present study aims to identify the frequency and pattern of mutations in the‘rpoB’gene and‘katG&inhA’genes in M.tuberculosis strains isolated from EPTB samples.
文摘Objective:To investigate the effects of arecoline on HPV-positive cervical cells and unveil its underlying mechanism in cervical carcinogenesis.Methods:The cytotoxicity of arecoline was determined and the effect of subtoxic concentrations of arecoline on the expression of viral oncoproteins and transcriptional factors was examined in CaSki and SiHa cells.HPV16 promoter activity was evaluated in a plasmid containing HPV16 long control region(pGL3-HPV16LCR)-transfected cells.Cell proliferation,cell migration,and number of colonies were assessed by MTT,wound healing assay,and colony-forming assay,respectively.Results:Arecoline at 0.01μg/mL significantly upregulated HPV16 E6 and E7 oncoproteins in both CaSki and SiHa cells.It also upregulated the expression level of c-Fos and c-Jun mRNAs,and c-Myc protein in CaSki and SiHa cells.In addition,arecoline at subtoxic concentrations(0.0025 and 0.01μg/mL)significantly induced HPV16 promoter activity in pGL3-16LCR-transfected cells.It also promoted SiHa and CaSki cell proliferation,migration,and colony formation.Conclusions:Arecoline at subtoxic concentrations promotes the proliferation,migration,and colony formation of CaSki and SiHa cells via upregulation of c-Fos,c-Jun,c-Myc,and HPV16 E6 and E7 expressions.
文摘BACKGROUND The upsurge of antibiotic resistance is a significant challenge to public health,and the dry pipeline of new antibiotics has prompted the discovery of alternative treatment approaches.Enterococcus faecalis(E.faecalis)isolates are often multidrugresistant,posing challenges to antibiotic therapy.Bacteriophage therapy is being explored as an alternative method to treat the growing population of antibioticresistant infections.Nevertheless,many inherent limitations of phages diminish their therapeutic utility,notably the restricted host range and quick development of mutants.The specific types and quantities of bacteriophages and antibiotics may be crucial in generating the optimal phage-antibiotic synergy.AIM To optimize the doses,order,and timing to optimize the synergy of phages and vancomycin on different bacteria states.METHODS A volume of 180μL of E.faecalis bacteria in the logarithmic growth phase,with a concentration of approximately 1×10^(8)colony forming units(CFUs)/mL,was introduced onto a microtitre plate.Subsequently,20μL of phage suspension(1×10^(6)PFUs/mL),vancomycin(16μg/mL),or a combination of both was introduced into the designated wells in the specified sequence and incubated at 37°C for 48 hours.The number of live bacteria was counted at different time points using standardized CFU counting protocols.RESULTS The biofilm model demonstrated that combining phages with vancomycin can eradicate the biofilm.Sequential therapy,involving phage application 8 hours before the antibiotic at a concentration of 108 PFUs/mL,proved the most efficient in eliminating the biofilms and killing the planktonic form of E.faecalis.CONCLUSION The combination of phageɸEFP01 at a higher concentration with a subinhibitory concentration of vancomycin yields a synergistic antibacterial outcome on E.faecalis strain resistant to vancomycin.
基金Supported by the Research Office,University of KwaZulu-Natal,Durbanan Incentive Grant from the National Research Foundation,Pretoria,South Africa,No.145943.
文摘Fermented corn starch has emerged as a promising functional food due to its triad of gut biotics,prebiotic,probiotic,and postbiotic properties,which present significant potential for the management of type 2 diabetes through gut microbiota modulation.During fermentation,microbial activity alters the starch matrix,enhancing the production of bioactive compounds such as resistant starch,isomalto-oligosaccharides,and resistant dextrin,which improve insulin sensitivity,reduce inflammation,and support glycemic control.Additionally,fermented corn starch harbors beneficial microbial strains including Lactiplantibacillus fermentum,Bifidobacterium breve,and Saccharomyces cerevisiae,which reinforce gut barrier integrity,stimulate incretin secretion,and suppress systemic inflammation.Postbiotic metabolites such as short-chain fatty acids,exopolysaccharides,and bacteriocins further contribute to glucose homeostasis through immune modulation and gut hormone regulation.Despite its promise,the clinical translation of fermented corn starch is limited by safety concerns(e.g.,contamination with pathogens or mycotoxins),lack of standardized fermentation protocols,and a scarcity of targeted studies.This review synthesizes current evidence on the antidiabetic potential of fermented corn starch,advocating for its integration into precision nutrition approaches and supporting further research to address safety and standardization challenges in functional food development.
文摘BACKGROUND Leptospirosis is a globally prevalent zoonotic disease with a significant burden in tropical and subtropical regions,including India.Despite its high fatality rate and endemic nature,the disease remains underreported in many areas,particularly in Northern India.AIM To analyze the demography,clinical presentation,complications,and mortality risk factors in presumptive leptospirosis patients admitted to a tertiary care hospital over the last 7 years from the Himalayan and Sub-Himalayan regions of Northern India.METHODS A retrospective analysis was conducted on hospital records of patients admitted with leptospirosis at the All India Institute of Medical Sciences,Rishikesh,between January 2018 and December 2024.Diagnosis was based on the Modified Faine’s Criteria and laboratory confirmation via IgM enzyme-linked immu-nosorbent assay(ELISA)and other diagnostic tests.Statistical analysis,including logistic regression,was performed to determine mortality predictors.RESULTS A total of 62 patients were included in the study.The most common symptoms were fever(98.39%),myalgia(41.94%),and jaundice(20.97%).Thrombocytopenia was the most frequent complication,occurring in 72.58%of cases,followed by hepatic involvement(62.9%)and acute kidney injury(40.32%).Multiorgan dys-function syndrome was present in 66.13%of cases,with 19.35%developing acute respiratory distress syndrome(ARDS).The overall mortality rate was 20.97%,with a higher but non-significant mortality trend in the Himalayan region(35%vs 14.29%,P=0.094).Logistic regression analysis revealed that no categorical predictor alone was statistically significant.However,ARDS had a high odds ratio(OR=2.10),suggesting clinical importance despite variability.Jaundice(OR=2.28,P=0.383)and creatinine levels(OR=2.12,P=0.1029)showed a possible trend toward increased mortality,despite statistical variability.Higher international normalized ratio levels(OR=0.33,P=0.0662)were suggestive of a protective effect.CONCLUSION Leptospirosis remains a severe and often fatal disease in Himalayan and sub-Himalayan regions,particularly in hilly areas,where underreporting and delayed diagnosis contribute to poor outcomes.Mortality was highest(33.33%)in cases with multiorgan involvement,particularly affecting the liver,kidneys,and lungs.We did not identify any statistically significant mortality predictors.Although the study did not assess the impact of timely diagnosis,improving healthcare accessibility in hilly regions may facilitate earlier detection and intervention,potentially reducing mortality.
文摘Metabolic syndrome(MetS)is a cluster of risk factors that significantly increase the chances of developing heart disease,type 2 diabetes mellitus,stroke,and other cardiovascular complications.Since current anti-MetS medications like statins,angiotensin-converting enzyme inhibitors,β-blockers,insulin sensitizers and diuretics have been reported to cause unwanted side effects,researchers are exploring promising alternatives.One such alternative relies on the potential of spices and condiments,which have a long history of use in traditional medicine.Among them,Cinnamomum zeylanicum Blume stands out as a popular spice worldwide for its unique taste,aroma,and delicate sweetness compared to other cinnamon varieties.This narrative review aims to summarize the in vivo and clinical evidence concerning the efficacy of C.zeylanicum against MetS indices.Relevant articles from PubMed,Scopus and Google scholar databases were reviewed.In vivo results suggested that C.zeylanicum preparations(extracts,essential oil,crude powder,bioactive compounds,and biosynthesized nanoparticles)were remarkably efficient in ameliorating MetS indices,while the clinical data were less and with several methodological limitations.Further robust clinical studies are warranted to definitively establish C.zeylanicum as a promising functional food for mitigating MetS,potentially leading to its dietary integration as a natural approach to improve metabolic health.
文摘Tumor stroma,or tumor microenvironment(TME),has been in the spotlight during recent years for its role in tumor development,growth,and metastasis.It consists of a myriad of elements,including tumor-associated macrophages,cancer-associated fibroblasts,a deregulated extracellular matrix,endothelial cells,and vascular vessels.The release of proinflammatory molecules,due to the inflamed microenvironment,such as cytokines and chemokines is found to play a pivotal role in progression of cancer and response to therapy.This review discusses the major key players and important chemical inflammatory signals released in the TME.Furthermore,the latest breakthroughs in cytokine-mediated crosstalk between immune cells and cancer cells have been highlighted.In addition,recent updates on alterations in cytokine signaling between chronic inflammation and malignant TME have also been reviewed.
文摘BACKGROUND Spinal tuberculosis(TB),also known as Pott’s spine,remains a significant global health issue,particularly in regions with a high TB burden.The disease presents complex challenges in diagnosis,management,and treatment,prompting a growing interest in research over recent years.The advancements in imaging,diagnostics,and treatment strategies have driven an increased focus on publishing clinical outcomes,review articles,and case series related to spinal TB(STB).AIM To perform a bibliometric analysis of STB research published over the last 5 years(2019-2023)to identify trends in publication volume,contributions by country,and the nature of the research being conducted.METHODS A comprehensive bibliometric analysis was conducted using the PubMed database,focusing on research articles published between 2019 and 2023.Keywords such as“spine tuberculosis,”“spinal TB,”“TB spine,”and“Pott’s spine”were utilized to capture relevant publications.Articles were analyzed based on the type of research(e.g.,case reports,review articles,cohort studies,randomized controlled trials[RCTs]),number of citations,and country of origin based on the corresponding author's details.Further subgroup analysis was performed according to the TB burden in various countries to assess research trends in high-burden regions.RESULTS A total of 528 articles met the inclusion criteria for this bibliometric analysis.The majority of articles were published between 2020 and 2023(440/528;83.3%),while the lowest number was published in 2019(88/528;16.7%).India led the global contributions with 25.8%of the total publications,followed by China(19.9%)and the United States(10.4%).Combined,African countries contributed 6.8%of the research on STB.Regarding the type of articles,case reports and case series dominated the literature(353/528;66.9%),followed by review articles(120/528;22.7%)and cohort studies(45/528;8.5%).Only 1.9%(10/528)of the studies were RCTs.Countries such as the United States,Germany,the United Kingdom,and Japan have pioneered the use of artificial intelligence(AI)in the diagnostic processes for STB,while India,China,South Africa,and other countries have been pivotal in conducting clinical trials and improving clinical management strategies.CONCLUSION This bibliometric analysis revealed a significant increase in STB research over the last 5 years,with India and China being the leading contributors.However,most publications are case reports or case series,with a limited number of RCTs.The results highlighted the need for more high-quality research,especially in terms of RCTs and innovations in diagnostic technologies.Additionally,the application of AI to STB diagnostics shows promise in developed countries,while high-burden countries are focusing on clinical trials and management strategies.
基金This study was financially supported by the Vice Chancellor for Research Affairs,Ilam University of Medical Sciences,Ilam,Iran(Project No.1326).
文摘Objective:To investigate the pattern of antibiotic resistance and biofilm production capabilities of clinical Acinetobacter baumannii(A.baumannii)isolates in this study.Methods:A.baumannii isolates were collected from Tehran Imam Khomeini Hospital in this cross-sectional study,and the minimum inhibitory concentrations for 16 antibiotics were determined using Vitek2®systems.All isolates were analyzed for biofilm production,then presence of biofilm-associated genes,and class Ⅰ and Ⅱ integron genes.Results:60 non-replicate A.baumannii isolates were included in this study.The resistance rates reached 100%for aztreonam,cefepime,ceftazidime,ciprofloxacin,piperacillin-tazobactam,piperacillin,ticarcillin,and trimethoprim-sulfamethoxazole.A.baumannii isolates were most sensitive to colistin and rifampicin being the most effective treatments.Multi-drug resistant and extensively drug-resistant isolates accounted for 83.3%and 16.7%,respectively.Of the isolates,91.6%formed biofilms,categorized as 10%strong,31.6%moderate,and 50%weak.No correlation was found between antibiotic resistance and biofilm formation.The genes csuE,abaI,and ompA were prevalent,but their distribution was similar across biofilm categories.A relationship between Int1 and biofilm production was noted.Conclusions:The high rates of antibiotic resistance and biofilm formation,alongside the presence of integrons including class Ⅰ and Ⅱ,underscore the necessity for ongoing monitoring of A.baumannii.Notably,classⅠintegron presence was significantly linked to biofilm formation.Further research is needed to explore the connection between antibiotic resistance and biofilm production in A.baumannii.
文摘Cystic echinococcosis (CE) is a prevalent zoonotic disease caused by Echinococcus granulosus, with a cosmopolitan distribution. The parasite is transmitted cyclically between canines and numerous intermediate herbivorous livestock animals. Also, other Taeniid tapeworms could infect domestic dogs and they pose significant veterinary and public health concerns worldwide. This study aimed to develop a sensitive molecular method for detecting Echinococcus spp. DNA in dog fecal samples using next-generation sequencing (NGS). A set of PCR primers targeting conserved regions of Taeniid tapeworms’ 18s rRNA genes was designed and tested for amplifying genomic DNA from various tapeworm species. The PCR system demonstrated high sensitivity, amplifying DNA from all tested tapeworm species, with differences observed in amplified band sizes. The primers were adapted for NGS analysis by adding forward and reverse adapters, enabling the sequencing of amplified DNA fragments. Application of the developed PCR system to dog fecal samples collected from Yatta town, Palestine, revealed the presence of E. granulosus DNA in five out of 50 samples. NGS analysis confirmed the specificity of the amplified DNA fragments, showing 98% - 99% similarity with the 18s rDNA gene of E. granulosus. This study demonstrates the utility of NGS-based molecular methods for accurate and sensitive detection of Echinococcus spp. in dog fecal samples, providing valuable insights for epidemiological surveillance and control programs of echinococcosis in endemic regions.
基金Supported by the National Natural Science Foundation of China,No.82474318the Jiangsu Administration of Traditional Chinese Medicine,No.zt202105+1 种基金Subject of Jiangsu Province Hospital of Chinese Medicine,No.Y2021rc22a Research Career Scientist。
文摘BACKGROUND The duodenum plays a significant role in metabolic regulation,and thickened mucous membranes are associated with insulin resistance.Duodenal mucosal resurfacing(DMR),a new-style endoscopic procedure using hydrothermal energy to ablate this thickened layer,shows promise for enhancing glucose and lipid metabolism in type 2 diabetes(T2D)patients.However,the mechanisms driving these improvements remain largely unexplored.AIM To investigate the mechanisms by which DMR improves metabolic disorders using a rat model.METHODS Rats with T2D underwent a revised DMR procedure via a gastric incision using a specialized catheter to abrade the duodenal mucosa.The duodenum was evaluated using histology,immunofluorescence,and western blotting.Serum assays measured glucose,lipid profiles,lipopolysaccharide,and intestinal hormones,while the gut microbiota and metabolomics profiles were analyzed through 16S rRNA gene sequencing and ultra performance liquid chromatography-mass spectrum/mass spectrum,severally.RESULTS DMR significantly improved glucose and lipid metabolic disorders in T2D rats.It increased the serum levels of cholecystokinin,gastric inhibitory peptide,and glucagon-like peptide 1,and reduced the length and depth of duodenal villi and crypts.DMR also enhanced the intestinal barrier integrity and reduced lipopolysaccharide translocation.Additionally,DMR modified the gut microbiome and metabolome,particularly affecting the Blautia genus.Correlation analysis revealed significant links between the gut microbiota,metabolites,and T2D phenotypes.CONCLUSION This study illustrates that DMR addresses metabolic dysfunctions in T2D through multifaceted mechanisms,highlighting the potential role of the Blautia genus on T2D pathogenesis and DMR’s therapeutic impact.
文摘Antipalu is a phytomedicinal medicinal beverage that is popular in the District of Abidjan, particularly for the treatment of malaria. However, Antipalu could present potential health effects on patients, and few toxicological studies have been conducted before its use. In order to determine the cytotoxicity of Antipalu, two complementary tests, LDH activity and the MTT cell proliferation assay, were used using Vero cells. Vero cells were exposed to increasing concentrations of Antipalu and incubated for 24, 48 and 72 hours. In addition, forty (40) rats distributed randomly into 4 groups, including 10 animals per group (5 males and 5 females) were used for the potential hepatoxic effects. Animals in group 1 received distilled water and were used as a control group. On the other hand, Lot I, II and III received by gavage a volume of the Antipalu extract corresponding to 1 ml/100 g of body weight at 200 mg/kg, 400 mg/kg, 800 mg/kg, respectively. The extract was administered daily at the same time for 28 days and serum was collected once a week to evaluate hepatic biochemical markers. After 28 days of study, all rats were euthanized by an overdose of ether and the liver of the rats was removed for gross morphological and histopathological analysis. The results of the cell supernatant assay showed an increasing extracellular LDH enzyme activity with lethal concentrations at 10% and 50% (LC10 = 111 µg/mL and LC50 = 555 µg/mL, respectively). In addition, the MTT assay showed a decrease in mitochondrial activity and thus cell proliferation after 24, 48 and 72 H of incubation. Our study showed that Antipalu caused alterations in the plasma membranes of the cells, resulting in the release of lactase dehydrogenase (LDH) into the external environment and a decrease in the mitochondrial activity of the Vero cells. The biochemical parameters ALT, ASAT, ALPs, and GGT showed no significant change (P > 0.05) in the group of treated rats compared to the controls. However, these variations were moderate and transient, with values remaining almost within their standard limits. Microscopic observations of liver tissue sections from rats treated with the Antipalu showed no lesions, edema and necrosis. These results suggest that the Antipalu did not interfere with the functioning or alter the integrity of the liver.
文摘The herbal drink “Attoté” has been widely used in the Abidjan district to treat a number of illnesses, notably erectile dysfunction. Despite the popularity of its therapeutic effects, very few studies have been carried out on its effects on the health of users. The aim of this study was to identify the constituents contained in the phytomedicinal product and to assess their potential adverse effects in vivo. Phytochemical screening was conducted to identify the bioactive molecules in “Attoté” and to evaluate its hepatic effects in vivo. Forty (40) Wistar rats, randomly divided into 4 groups, with 10 animals per group (5 males and 5 females) were used to study potential hepatotoxic effects. Group 1 animals (control group) received distilled water. Batches I, II and III received by gavage a volume of Attoté extract corresponding to 1 ml/100 g body weight at 200 mg/kg, 400 mg/kg and 800 mg/kg, respectively. Attoté extract was administered daily at the same time for 28 days, and serum was collected every two weeks to assess hepatic biochemical markers by spectrophotometry using a Cobas C311® HITACHI biochemistry system. After one month of study, the rats were euthanized by ether overdose and the livers were harvested for morphological and histopathological analysis. Phytochemical screening revealed the presence of alkaloids, polyphenols, leucoanthocyanes, anthraquinones and quinones. Hepatic biochemical and hematological parameters such as red globular, hemoglobin, alanine aminotransferase (ALAT), aspartate aminotransferase (ASAT), alkaline phosphatase (ALPs) and gamma glutamyl transferase (GGT) showed no significant change (p > 0.05) in the treated rat group compared with controls. However, these variations were moderate and transient, with values remaining almost within their standard limits. Microscopic observations of liver tissue sections from treated rats showed no liver damage or dysfunction. This study merits further investigation, with a view to gaining a better understanding of the cytotoxic mechanisms of herbal medicinal beverages, with a view to their reformulation as improved traditional medicines (ITMs).
文摘Helicobacter pylori(H.pylori)infection is one of the most prevalent bacterial infections affecting mankind.About half of the world’s population is infected with it.It causes several upper gastrointestinal diseases,including gastric cancer(GC).It has been identified as a major risk factor for GC.GC is one of the most common cancers affecting humans and the third leading cause of cancer-related deaths worldwide.H.pylori infection causes an inflammatory response that progresses through a series of intermediary stages of precancerous lesions(gastritis,atrophy,intestinal metaplasia,and dysplasia)to the final development of GC.Among infected individuals,approximately 10%develop severe gastric lesions such as peptic ulcer disease,1%-3%progress to GC,and 0.1%develop mucosa-associated lymphoid tissue followed by the development of lymphoma.The bacterium has many virulence factors,including cytotoxin-associated gene A,vacuolating cytotoxin A,and the different outer membrane proteins that cause cancer by different mechanisms.These virulence factors activate cell signaling pathways such as PI3-kinase/Akt,JAK/STAT,Ras,Raf,and ERK signaling that control cell proliferation.Uncontrolled proliferation can lead to cancer.In addition,the repair of DNA damage may also be impaired by H.pylori infection.Reduced DNA repair in combination with increased DNA damage can result in carcinogenic mutations.The accurate identification of pathogenetic pathways is imperative for the development of targeted diagnostic markers and personalized treatments.This scoping review aims to update the readers on the role of H.pylori in the development of GC.It will focus on the molecular mechanisms underpinning gastric carcinogenesis in H.pylori infection.It will highlight the interaction between bacterial virulence factors and host cellular pathways,providing insights into potential therapeutic targets and preventive strategies.
文摘The significance of gut microbiota(GM)in human health is being increasingly researched.An imbalance in GM composition,known as dysbiosis,is linked to various and other health issues.In addition,antibiotics are the primary and most significant factors leading to major changes in the composition and function of the GM,which may result in colonization by antimicrobial-resistant(AMR)pathogens.Therefore,alternative antibiotic strategies for combating AMR pathogens are urgently needed.This narrative review highlights current knowledge regarding various pertinent strategies for decolonizing bacterial pathogens from GM and emphasizes decolonization therapies’critical role in pediatric surgical disorders.Strategies such as decontamination of the digestive tract utilizing antibiotics,the use of probiotics,and particularly fecal microbiota transplantation have introduced new options for clinical treatment.These treatments show the potential to restore GM balance and have demonstrated advantages for intestinal disorders related to pediatric surgery,including inflammatory bowel disease,neonatal necrotizing enterocolitis,Hirschsprung-associated enterocolitis,and short bowel syndrome.Despite GM therapeutics,recent strategies are still in their developmental phase and exhibit challenges that need further research.Thus,potential future directions for GMtargeted decolonization therapies are under consideration.Innovative alternative strategies to combat AMR though GM modulation in disorders related to pediatric surgery appear to be promising and should continue to be prioritized for further research and development.
基金the National Natural Science Foundation of China(82172266to P.G.W.)Natural Science Foundation of Beijing(7232002 to N.G.).
文摘The Japanese encephalitis virus(JEV)causes Japanese encephalitis(JE),a severe disease that primarily affects children and induces significant central nervous system complications.With the widespread adoption of vaccination in children,the incidence among older individuals has increased substantially.Despite this epidemiological shift,research on JEV infection in the elderly remains limited.We established JEV infection models using both aged and young mice to explore age-related differences in pathology and underlying mechanisms.Brain tissue samples were analyzed for pathological changes and viral tropism in major cell types.To further characterize immune response variations,we conducted transcriptomic sequencing on the brain tissues following JEV infection.Aged mice exhibited lower mortality,delayed disease progression,and milder brain pathology compared to young mice after JEV infection.Viral titers and infection rates of major brain cell types were similar in both groups.Transcriptomic analysis revealed diminished immune activation and weaker inflammatory responses in aged mice.Additionally,microglial activation and CD8^(+) T cell function were significantly reduced.Interestingly,JEV infection induced the selective recruitment of B cells in the brains of aged mice.These B cells may modulate the effects of CD8^(+) T cells in the disease process.Compared to young mice,aged mice showed enhanced resistance to JEV progression and reduced brain pathology.This resistance was associated with a weakened immune response in the aged brain,rather than differences in viral infection.The specific recruitment of B cells in the brains of aged mice may play a crucial role in limiting disease progression.
